US4492254A
Expired / Lapsed
US
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Apparatus for guiding a fluid medium driven weft thread in the shed of a weaving machine and use of the apparatus at a multiple longitudinal traversing shed weaving machine
Assignee: Maschinenfabrik Sulzer Rueti AG
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Filing: 1984-01-30
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Granted: 1985-01-08
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Expires: 2004-01-30
Abstract
Abstract An apparatus for guiding a weft or filling thread in the shed of a weaving machine, the weft thread being driven by a flowing fluid medium, comprises two lamellae combs which can dip into and out of the warp threads. The lamellae or equivalent plate-like guide elements of the lamellae combs each possess a throughpass opening for guiding the weft thread and a thread exit or outlet opening. When the lamellae are in a position completely immersed in the shed they are interleaved or shoved into one another and form a guide channel for the weft threads, this guide channel being coherent or continuous in the weft insertion direction. Hence, the thread exit or outlet openings are sealed, so that the guide channel also is continuously closed in radial direction. The closed guide channel renders possible, on the one hand, a controlled flight of the weft thread, a reduced energy consumption and driving of the weft thread both by a blowing action and also by a suction action and, on the other hand, can be particularly advantageously employed at a multiple longitudinal traversing shed loom containing a weaving rotor.
Inventors
- 👤 Alois Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:21
CPC Classifications
D; D03; D03D; D03D49/00; D03D49/60; D03D49/62; D03D41/00; D03D41/005; D03D47/00; D03D47/27; D03D47/277; D03D47/278; D03D47/28; D03D47/30; D03D47/3006; D03D47/302
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
240 words
An apparatus for guiding a fluid-driven weft thread within an open shed of a plurality of open sheds defined in a multiple longitudinal traversing shed weaving machine, comprising: a weaving rotor provided at its circumference with comb means of shed retaining elements for the warp threads defining the open shed; two lamellae combs which are provided at said weaving rotor and capable of dipping into and out of the open shed defined by the warp threads; said two lamellae combs being operatively associated with said comb means of shed retaining elements; each of said two lamellae combs comprising a predetermined number of elastically structured lamella elements; each said lamella element having a throughpass opening for guiding an inserted weft thread and a thread outlet opening; said lamella elements of said two lamellae combs, when assuming an operative position where they are immersed into the open shed being interleaved with one another and forming by means of their throughpass openings a guide channel for the weft thread inserted in a predetermined weft insertion direction; said guide channel being essentially continuous in the weft insertion direction; said thread outlet openings of said lamellae elements, when in their operative position, being sealed and said guide channel also being continuously closed in radial direction; and stop means operatively associated with said elastically structured lamella elements in order to close said thread outlet openings during interleaving of said lamella elements of said two lamellae combs.
Claim 2
Independent Claim
240 words
An apparatus for guiding a fluid-driven weft thread within an open shed of a plurality of open sheds defined in a multiple longitudinal traversing shed weaving machine, comprising: a weaving rotor provided at its circumference with comb means of shed retaining elements for the warp threads defining the open shed; two lamellae combs which are provided at said weaving rotor and capable of dipping into and out of the open shed defined by the warp threads; said two lamellae combs being operatively associated with said comb means of shed retaining elements; each of said two lamellae combs comprising a predetermined number of elastically structured lamella elements; each said lamella element having a throughpass opening for guiding an inserted weft thread and a thread outlet opening; said lamella elements of said two lamellae combs, when assuming an operative position where they are immersed into the open shed being interleaved with one another and forming by means of their throughpass openings a guide channel for the weft thread inserted in a predetermined weft insertion direction; said guide channel being essentially continuous in the weft insertion direction; said thread outlet openings of said lamellae elements, when in their operative position, being sealed and said guide channel also being continuously closed in radial direction; and stop means operatively associated with said elastically structured lamella elements in order to close said thread outlet openings during interleaving of said lamella elements of said two lamellae combs.
Claim 3
Dependent Claim
54 words
The apparatus as defined in claim 1, wherein: said weaving rotor comprises a hollow roll extending substantially over the width of the weaving machine; related slots at the site of each said two lamellae combs being provided at said hollow roll; and each said two lamellae combs being displaceably mounted in their related slots.
Claim 4
Dependent Claim
44 words
The apparatus as defined in claim 2, wherein: each said lamella element of said two lamellae combs having an upper leg bounding the thread outlet opening and being elastically structured; and said shed-retaining elements constituting said stop means for closing said thread outlet openings.
Claim 5
Dependent Claim
85 words
The apparatus as defined in claim 1, further including: rod members at each of which there are fixed the lamella elements of each one of said two lamellae combs; each said rod member extending essentially over the width of the weaving machine; respective drive lever means having an end each engaging at a related one of said rod members; each said drive lever means having a restrictive opposite end; and related control roll means carried by said opposite end of each said drive lever means.
Claim 6
Dependent Claim
22 words
The apparatus as defined in claim 4, further including: loom-fixed control cam means for controlling each one of said control roll means.
Claim 7
Dependent Claim
33 words
The apparatus as defined in claim 5, further including: a shaft extending internally of the weaving rotor over the width of the loom; and said control cam means being mounted upon said shaft.
Claim 8
Dependent Claim
95 words
The apparatus as defined in claim 1, wherein: each said lamellae comb being displaceable in a predetermined displacement direction; each said lamella element of said two lamellae combs having an end surface of substantially wedge-shaped configuration in said predetermined displacement direction; said substantially wedge-shaped end surfaces of said lamella elements at one of said two lamellae combs defining wedge means converging in said predetermined displacement direction; and said substantially wedge-shaped end surfaces of the lamella elements at the other one of said two lamellae combs defining wedge means converging opposite to said predetermined displacement direction.
Claim 9
Dependent Claim
62 words
The apparatus as defined in claim 7, wherein: each said lamella element of said two lamellae combs is provided with a constricted portion following said wedge means; and said constricted portions being spaced from the throughpass openings of said lamella elements such that, in said operative position thereof, the warp threads cross said lamella elements at the region of said constricted portions.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-08 | 1988-07-09 | 1989-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-08 | 1992-07-09 | 1993-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-08 | 1996-07-09 | 1997-01-08 | $7700.00 | Window Closed / Lapsed |